{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "properties": {
    "inv": {
      "title": "Inverted",
      "description": "Inverted Mask flag",
      "type": "boolean"
    },
    "nm": {
      "title": "Name",
      "description": "Mask name. Used for expressions and effects.",
      "type": "string"
    },
    "pt": {
      "title": "Points",
      "description": "Mask vertices",
      "type": "array",
      "items": {
        "type": "object",
        "oneOf": [
          {
            "$ref": "#/properties/shape"
          },
          {
            "$ref": "#/properties/shapeKeyframed"
          }
        ]
      }
    },
    "o": {
      "title": "Opacity",
      "description": "Mask opacity.",
      "type": "object",
      "oneOf": [
        {
          "$ref": "#/properties/value"
        },
        {
          "$ref": "#/properties/valueKeyframed"
        }
      ]
    },
    "mode": {
      "title": "Mode",
      "description": "Mask mode. Not all mask types are supported.",
      "type": "string",
      "oneOf": [
        {
          "standsFor": "None",
          "value": "n"
        },
        {
          "standsFor": "Additive",
          "value": "a"
        },
        {
          "standsFor": "Subtract",
          "value": "s"
        },
        {
          "standsFor": "Intersect",
          "value": "i"
        },
        {
          "standsFor": "Lighten",
          "value": "l"
        },
        {
          "standsFor": "Darken",
          "value": "d"
        },
        {
          "standsFor": "Difference",
          "value": "f"
        }
      ]
    }
  }
}